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The domes are rooms in Super Mario Galaxy located on the Comet Observatory. They are the equivalent of worlds in Mario sidescrollers. Here, Mario can transport himself to other galaxies. After Mario collects Power Stars, more galaxies appear. Using a blue Luma which turns into a Pull Star, Mario can view galaxies and then, using a Launch Star, he can fly to them. The majority of the domes have five galaxies except the final one, the Garden, which has only four.
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